<http://webisa.webdatacommons.org/293157452>	<http://www.w3.org/ns/prov#value>	"Preferably at least two of R1 to R5 being H or CH3, and at least one of R1 to R2 is ???X-Alk, ???X-Alk-X or ???X???Y???X, ???NR6 or O???R6 and the rest of R1 to R5 are H or CH3; wherein:" .
<http://webisa.webdatacommons.org/293157452>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<google.com> .
<http://webisa.webdatacommons.org/prov/347831117>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/293157452> .
<http://webisa.webdatacommons.org/293157452>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .